This is a set of two optional RPM In-Line Steering Blocks, and are intended for use with the HPI Blitz and Firestorm short course trucks. Just a short time ago, RPM engineers designed new rear bearing carriers for the HPI Blitz and Firestorm lines of vehicles that incorporated 5x11mm bearings, improving durability and performance significantly. That same bearing size is now available for the front end of those same vehicles! RPM In-Line Steering Blocks incorporate a 5x11mm bearing, which has nearly twice the dynamic load rating as the stock 5x10mm bearing. That’s nearly twice the muscle to make a strong truck nearly bulletproof! RPM In-Line Steering Blocks incorporate all stock geometry for a perfect fit and are molded from our ultra durable blend of nylons for a significant improvement in durability and strength as well.

NOTE: 5x11x4mm bearings are not included with these kits (4 bearings are needed for each kit). RPM In-Line Steering Blocks are “stock” replacement parts for the HPI Firestorm Line of vehicles while they are the “optional” replacement steering blocks available for the HPI Blitz line of trucks.